<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>对象继承</title>
</head>
<body>
  <script>
    //手机
    function Phone(brand,price){
      this.brand = brand;
      this.price = price;
    }

    Phone.prototype.call = function(){
      console.log("我可以打电话哟！！！");
    }

    //智能手机
    function SmartPhone(brand,price,color,size){
      Phone.call(this,brand,price);
      this.color = color;
      this.size = size;
    }

    //设置子级构造函数的原型
    SmartPhone.prototype = new Phone;
    SmartPhone.prototype.constructor = SmartPhone;

    //声明子类的方法
    SmartPhone.prototype.photo = function(){
      console.log("我可以拍照");
    }

    SmartPhone.prototypeplayGame = function(){
      console.log("我可以玩游戏");
    }

    const chuizi = new SmartPhone('锤子',2499,'黑色','5.5inch');
    
    console.log(chuizi);
  </script>
</body>
</html>